Shulou(Shulou.com)06/01 Report--

This article is about what commonly used Sheel scripts are about. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

1 、 list_sys_status.sh

Displays the following information used by the system:

Hostname, IP address, subnet mask, gateway, DNS server IP address information

#! / bin/bashIP= `ifconfig eth0 | head-2 | tail-1 | awk'{print $2}'| awk-F ":'{print $2} '`ZW= `ifconfig eth0 | head-2 | tail-1 | awk' {print $3}'| awk-F": "'{print $2} '`GW= `route-n | tail-1 | awk' {print $2} '`HN= `hostname`DNS = `head-1 / etc/resolv.conf | awk' {print $2} '`echo' this machine IP address is'$IPecho' '$ZWecho' this machine gateway is'$GWecho 'this host name is' $HNecho 'and this machine DNS is' $DNS2, Mysqlbak.sh backup database directory script #! / bin/bashDAY= `date +% Y% m% d`SIZE = `du-sh / var/lib/ mysql`echo "Date: $DAY" > / tmp/dbinfo.txtecho "Data Size: $SIZE" > > / tmp/dbinfo.txtcd / opt/dbbak & > / dev/null | | mkdir / opt/dbbaktar zcf / opt/dbbak/mysqlbak-$ {DAY} .tar.gz / var/lib/mysql / tmp/dbinfo.txt & > / dev/nullrm-f / tmp/dbinfo.txtcrontab-e55 23 * / 3 * / opt/dbbak/dbbak.sh3, 23:30 every Sunday night Make a full backup of the webdb library on the database server

Save each file to the / mysqlbak directory of the system

Use the system date as the backup file name webdb-YYYY-mm-dd.sql

Generate a new binlog log after each full backup

Back up all current binlog logs to the / mysqlbinlog directory

# mkdir / mysqlbak#mkdir / mysqlbinlog#service mysqld startcd / shell#vi webdb.shangxinxinxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxe3023 * * 7 / shell/webdb.sh4, very.ser.sh (check the running status of any service): / mysqlbak/webdb-$ {day} .sqlmysql-hlocalhost-uroot-p-e "flush logs" tar zcf / mysqlbinlog.tar.gz / var/lib/mysql/mysqld-bin.0*#chmod + x webdb.sh#crontab-e30 23 * * 7 / shell/webdb.sh4

Check only the status of any one of the services vsftpd httpd sshd crond or mysql

If it is not one of the five services, prompt the user to check the name of the service and exit the script

If the service is running, output "service name is running"

Start the service if the service is not running

Method 1: use read to write a script #! / bin/bashread-p "Please enter your service name:" serviceif [$service! = 'crond'-a $service! =' httpd'-a $service! = 'sshd'-a $service! =' mysqld'-a $service! = 'vsftpd']; thenecho "can only check' vsftpd,httpd,crond,mysqld,sshd" exit 5fiservice $service status & > / dev/nullif [$?-eq 0] Thhenecho "Service online" elseservice $service startfi method 2: use location variables to write scripts if [- z $1]; thenecho "You mast specify a servername!" echo "Usage: `basename$ 0` servername" exit 2fiif [$1 = = "crond"] | | [$1 = = "mysql"] | | [$1 = = "sshd"] | | [$1 = = "httpd"] | [$1 = "vsftpd"]; thenservice $1 status & > / dev/nullif [$?-eq 0] Thenecho "$1 is running" elseservice $1 startfielseecho "Usage: `basename $0` server name" echo "But only check for vsftpd httpd sshd crond mysqld" & & exit2fi5, pc_noline.sh

Output the ip address of the online host in the 24 network segment of 192.168.1.0.

Count the number of offline hosts, and save the ip address of the offline hosts and the time when they are not online to the / tmp/ip.txt file

#! / bin/baship=192.168.1.j=0for I in `seq 10 12`doping-c 3$ ip$i & > / dev/nullif [$?-eq 0]; thenecho online hosts: $ip$ielselet j++echo $ip$i > > / tmp/ip.txtdate > > / tmp/ip.txtfidoneecho the number of hosts not online has $J6, a simple website forum test script

Use interactive input method to automatically log in to the forum database and change the user password

[root@test1 scripts] # vim input.shump sp Enter dbuser password: "webdirWebPath=/home/WebSer/$webdir/configecho-p" Enter dbname: "dbnameecho $dbnameread-p" Enter dbtablepre: "dbtablepreecho $dbtablepreGlobalphp= `grep" tablepre* "$WebPath/config_global.php | cut-d"-f8`Ucenterphp = `grep "UC_DBTABLEPRE*" $WebPath/ Config_ucenter.php | cut-d'.'- f2 | awk-F "'{print $1} '`if [$dbtablepre = = $Globalphp] & & [$dbtablepre = = $Ucenterphp] Then Start=$dbtablepre Pre= `echo $Start$ End` read-p "Enter you name:" userset echo $userset Result= `$MYsql-u$dbuser-p$dbpass $dbname-e "select username from $Pre where username='$userset'\ G" | cut-d'- f2 | tail-1`echo $Result if [$userset = = $Result]; then read-p "Enter your password:" userpass passnew= `echo-n $userpass | openssl md5 | cut-d'- f2` $MYsql-u$dbuser-p$dbpass $dbname-e "update $Pre set password='$passnew' where username='$userset'" "$MYsql-u$dbuser-p$dbpass $dbname-e" flush privileges; "else echo" $userset is not right user! " Exit 1 fielse exit 2fi7, slave_status.sh (check the status of the slave database server in the mysql master-slave structure)

1) whether the local database service is running

2) can you communicate with the main database server normally?

3) can you use authorized users to connect to the database server

4) whether the native slave_IO process is in YES state

Whether the native slave_SQL process is in YES state

[root@test1 scripts] # vim test.shroud charger binbinashnetstat-tulnp | grep: 3306 > / dev/nullif [$?-eq 0]; thenecho "Service is running" elseservice mysqld startfiping-c 3 192.168.1.100 & > / dev/nullif [$?-eq 0]; thenecho "Network connection normal" elseecho "Network connection failed" fimysql-h292.168.1.100-uroot-p123456 & > / dev/nullif [$?-eq 0] Thenecho "Database connection successful" elseecho "Database connection failed" fiIO= mysql-uroot-p123-e "show slave status\ G" | grep Slave_IO_Running | awk'{print $2}'> / dev/nullSQL= mysql-uroot-p123-e "show slave status\ G" | grep Slave_SQL_Running | awk'{print $2}'/ dev/nullif [IO==Yes] & & [SQL==Yes]; thenecho "IO and SQL connection successful" elseecho IO thread and SQL thread connection failed "fi"

Thank you for reading! This is the end of this article on "what are the commonly used Sheel scripts?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

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